P38 alpha kinase complexed with a pyrazolo-triazine based inhibitor

Experimental Data Snapshot

  • Resolution: 2.27 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.260 

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Ligand Structure Quality Assessment 

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Discovery of pyrrolo[2,1-f][1,2,4]triazine C6-ketones as potent, orally active p38α MAP kinase inhibitors.

Dyckman, A.J.Li, T.Pitt, S.Zhang, R.Shen, D.R.McIntyre, K.W.Gillooly, K.M.Shuster, D.J.Doweyko, A.M.Sack, J.S.Kish, K.Kiefer, S.E.Newitt, J.A.Zhang, H.Marathe, P.H.McKinnon, M.Barrish, J.C.Dodd, J.H.Schieven, G.L.Leftheris, K.

(2011) Bioorg Med Chem Lett 21: 4633-4637

  • DOI: https://doi.org/10.1016/j.bmcl.2011.05.091
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Pyrrolo[2,1-f][1,2,4]triazine based inhibitors of p38α have been prepared exploring functional group modifications at the C6 position. Incorporation of aryl and heteroaryl ketones at this position led to potent inhibitors with efficacy in in vivo models of acute and chronic inflammation.

  • Organizational Affiliation

    Bristol-Myers Squibb, Research and Development, Princeton, NJ 08543-4000, USA. alaric.dyckman@bms.com

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitogen-activated protein kinase 14366Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q16539 (Homo sapiens)
Explore Q16539 
Go to UniProtKB:  Q16539
PHAROS:  Q16539
GTEx:  ENSG00000112062 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16539
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on NK0

Download Ideal Coordinates CCD File 
B [auth A]3-[(6-benzoyl-5-methylpyrrolo[2,1-f][1,2,4]triazin-4-yl)amino]-N-cyclopropyl-4-methylbenzamide
C25 H23 N5 O2
Binding Affinity Annotations 
IDSourceBinding Affinity
NK0 BindingDB:  3S4Q IC50: 4 (nM) from 1 assay(s)
Binding MOAD:  3S4Q IC50: 4 (nM) from 1 assay(s)
PDBBind:  3S4Q IC50: 4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.27 Å
  • R-Value Free: 0.327 
  • R-Value Work: 0.257 
  • R-Value Observed: 0.260 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.34α = 90
b = 71.5β = 90
c = 73.49γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

  • Released Date: 2012-02-01 
  • Deposition Author(s): Sack, J.S.

Revision History  (Full details and data files)

  • Version 1.0: 2012-02-01
    Type: Initial release